Automatic sprinkler.



n. w. N'EwmN, AUTOMATIC SPRINKLER. APPLICATION FILED MARA 8. |918.

Patented Jan. 7, 1919.

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.FLT THEME? UNTTED sTATEs PATENT oEEIoE.

EOBEET WILKINSON NEWTON, OE rnovInENcE, nnOnE ISLAND.

AUTOMATIC SPEINKLEE.

. To all whom t may concern:

- Patent No. 514,161, patented to me February 6, 1894, to which reference is made, whereby corrosion in the valve seat and sticking or cohesion of the releasing element when in operation, are wholly eliminated.

- Further objects of my invention are to reduce the cost of construction and improve the operation of automatic sprinklers, thereby producing a sprinkler that is more positively locked under normal conditions and more quickly released under fire conditions, than has heretofore been done.

' My invention consists in the peculiar and noyel construction of an automatic sprinkler, havin"\details of construction, as will be more lly settorth hereinafter and claimed.

Figure 1 is aside view of lmy improved|` automatic sprinkler..

Fig. 2 is a longitudinal sectIonal View through the sprinkler taken on line A2.2 of

Fig. 3 is an enlarged detail sectional view of the valve member showing the parts in a separated position.

Fig, 4 is an enlarged transverse sectlonal view taken on line 4.4 of Fig. 1 through the releasing device, and

Fig. 5 is an enlarged perspective view of the locking member.

In the drawings 6 indicates the body of an automatic sprinkler having the screw-threaded tubular shank 7, the yoke 8, and the `arms 9.9 curving to the hub 10. A screw 11 is screw-threaded through the hub and has the usual cone shaped inner end 12 and square outer end. A deiector 13 having the fingers 14.14 on its periphery, a cone shaped annular rib 15 and the holes 16.16 is secured to the hub 10 by a lock-nut 17. The inner end of the tubular shank 7 has a screw, threaded recess 18 and a detachable screw- Specication of Letters Patent;

Patented J an. 7, 1919.

Application tiled Iarch 8, 1918. Serial No. 221,220.

threaded valve seat 19 formed in two parts,

is screwed into the recess 18. The valve seat 19 may be formed of glass or of a noncorrosive metal. A round iboxlshaped valve 20 is constructed to have a bottom`21 in which is a depression 22, a cover 23 which extends over the bottom and has a raised portion 24 on its top, a spring washer' 25 in the box, a thin plate 26 which ts over the cover 23 and a thin washer 27 over the late 26 .and engaging the valve-seat 19. he plate 26 and washer 27 are gold plated on the sur- I faces that are in contact with each other, thereby eliminating corrosion between the washer and plate.- Interposed between the end 12 of the screw 11 and the valve 20 is a bent valve support and releasing device 28, consisting of a thrust rod 29 having a rounded end engaging with the depression 22 in the valve.2 0, and a rounded end engaging with a cylindrical roll 30, a thrust rod 31 having a rounded end engaging with the vroll 30 and an end in which is a depression engaging with the end 12 of the screw 11. The rods and roll are held in place by a shoe 32 shaped to hold the rods and roll and a plate33. The shoe 32 has the extensions 34.34 in one of which are the slots 35.35 and in the other the holes 36.36. The plate 33 has the hooks 37.37 which hook through the slots 35.35 in the shoe, and theholes 36.36' which are alined with the holes 36.36in the shoe, as `shown'in Fig. 4. A hollow tapered member 38 extends through and loosely fits in the holes 36.36 in the shoe and plate and has an enlarged head 39 under which is an plate 33 and has the end 45 which lies against vthe plate 33 and is Afusibly secured to the releasing device 28 by a fusible rivet 46 as Ashown in Figs. l and 2.

yBy this construction the plate 33 actsas a lever to hold the thrust rods 29 and 31 in place in the shoe 32, so that they act as a solid strut between the valve 20 and the screw 11 and .the plate is more securely held in place by the member 38 being as far as possible from `the fulcrum of the lever or plate. The valve seat 19 being formed sep arate from the sprinkler allows the lseat to be made of any non-corrosive material and the construction of the valve 20 is such that is such that a stream of water striking the deflector is broken up into larger drops, which is' more effective in putting out fires, than the spray from sprinklers as heretofore constructed. When the fusible rivets 42 and 46 are fused the pressure of the water on the valve 20 will cause the valve and all of the parts of the releasing device 28 to separate and fall out of the sprinkler and the water will pass unobstructed to the deflector 13 from .which it is -distributed in large drops. In practice I find that this sprinkler will stand a heavy' water pressure without leaking or corrosion and at the same time is extremely sensitive in operation.

Having thus 'described my invention I claim as new.

l. In an automatic sprinkler, a valve supporting and releasing device consisting of a shoe, a plate over the shoe, thrust rods in the shoe and held in place by the plate, means for detachably and pivotally securing 'the plate to the shoe and means for fusibly securing the plate to the shoe.

2. In an automatic sprinkler, avalve-supporting and releasing device consisting of a shoe, thrust rods in theI shoe and held in place by the plate, means for detachably and pivotally securing the plate to the shoe at o ne side of the thrust, rods and means for fusibly securing the plate tothe shoe at the other side of the thrust rods.

3. In an automatic sprinkler, a valve supporting and releasing device consisting of two thrust rods and an intermediate roll, a

shoe shaped to hold the thrust rods and roll, side extensions on the shoe, a plate over the thrust rods, roll and shoe, means for detachably hinging the plate to a side extension and means for fusibly securing the plate to the opposite side extension. f

4. In an automatic sprinkler, a valve supporting and releasing device consisting of thrust rods, a shoe shaped to hold the thrust rods and having two side extensions one having a slot and the other having a hole, a plate over the thrust rods and shoe and having a hook in the slot in the side extension and a hole corresponding to the hole in the other sideI extension, a tapered member through the holes in the shoe and plate, and having an enlarged head, 'a collar on the opposite end of the locking member, and a fusible rivet through the locking member and collar. 5. In an automatic sprinkler, a valve supporting and releasing device consisting of thrust rods, a shoe shaped to hold the thrust rods and having opposite side extensions one of which has a slot andthe other a hole, a plate over the thrust rods and shoe and havlng a hook in the slot and a hole corresponding to the hole in the shoe, a tapered member through the holes in the plate and shoe and having an enlarged head, an asbestos washer j under the head, a collar on the end of the tapered member, an asbestos washer intermediate the collar and the shoe extension, a fusible metal rivet throughthe tapered member and collar, a member having a bent loopshaped end over the shoe and plate' and an end secured by a fusible metal rivet to the valve supporting and releasing device.

In testimony whereof I have signed .my name to this specification.

ROBERT WILKINSON NEWTON. 

